definition of parfocal
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What does non focal mean? Parfocal lens A parfocal lens is a lens that stays in focus when magnification/focal length is changed. There is inevitably some amount of focus error, but small enough to be considered insignificant. Contents
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Definition of 'maniacal' Definition of 'maniacal'. maniacal (mənaɪəkəl ) If you describe someone's behaviour as maniacal, you mean that it is extreme, violent, or very determined, as if the person were insane. He was almost maniacal in his pursuit of sporting records.
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How many hours to work while being a full time college student? Work whatever you're comfortable with. If you can only handle 15 to 20 hours a week then so be it. Last year I took 14 credits each semester, and I worked 5 days a week at about 30 hours a week between my two jobs. I still had time to study and hang out with my friends and family.
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Progressive Multifocal Leukoencephalopathy in HIV Progressive multifocal leukoencephalopathy (PML) is a demyelinating disease of the central nervous system (CNS) characterized by widespread lesions due to infection of oligodendrocytes by JC virus, which is a human polyomavirus (formerly known as papovavirus).
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- Definition of CORTICAL. 1. : of, relating to, or consisting of cortex.2. : involving or resulting from the action or condition of the cerebral cortex.— cor·ti·cal·ly \-k(ə-)lē\ adverb. ADVERTISEMENT.efinition of CORTICAL. 1. : of, relating to, or consisting of cortex. 2.
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distance hyperfocal distance-the distance in front of a lens that is focused at infinity beyond which all objects are well defined and clear. leap-the distance leaped (or to be leaped); a leap of 10 feet.
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- Parfocal lens. A parfocal lens is a lens that stays in focus when magnification/focal length is changed. There is inevitably some amount of focus error, but small enough to be considered insignificant.
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0 100%FREQUENCYLittle used37 /100 The translations of parfocal from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «parfocal» in English.
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- Definition of lexical meaning : the meaning of the base (such as the word play) in a paradigm (such as plays, played, playing) — compare grammatical meaning new!
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Matrifocal Family, Definition (s) of “…the matrifocal family, a common phenomenon in some parts of the world where adult males regularly leave home for long periods to work or for some other purposes” (Parkin, 1997, p. 29). Glossary Source: Parkin, R. (1997). Kinship: An introduction to basic concepts. Oxford: Blackwell Publishers.
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focal point focal point - a point of convergence of light (or other radiation) or a point from which it diverges. focus. point - the precise location of something; a spatially limited location; she walked to a point where she could survey the whole street.
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- PAR is an independent voice offering solutions to crucial issues in Louisiana through accurate, objective research and focusing public attention on those solutions. PAR Coastal Project. PAR launched a new initiative providing ongoing fiscal oversight of the state’s spending on coastal restoration and protection and its job impacts. PAR will identify issues concerning fiscal policy, transparency and the decision making process but will not cover environmental or engineering evaluations.
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- Progressive spectacle lenses, also called progressive addition lenses, progressive power lenses, graduated prescription lenses, and varifocal or multifocal lenses, are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation.
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- Definition of paring. 1 : the act of cutting away an edge or surface.
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- Definition of parve from the Collins English Dictionary Auxiliary verbs An auxiliary verb is a verb that is used together with a main verb to show time and continuity.
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hip bone occipital bone the bone constituting the back and part of the base of the skull. See anatomic Table of Bones in the Appendices. parietal bone one of two bones forming the sides and roof of the cranium. See anatomic Table of Bones in the Appendices.
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collimate From Latin collimare, which originated as a misreading of collineare. collimate ‎(third-person singular simple present collimates, present participle collimating, simple past and past participle collimated) To focus into a narrow beam or column; to adjust a focusing device so that it produces a narrow beam.
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Multifocal and Monovision Contacts There are two options for people who need both distance and near vision corrected...multifocal lenses and monovision. Multifocal contact lenses or bifocal contacts are soft, disposable contact lenses which correct distance and near with each eye.They are similar to bifocal glasses because both eyes are corrected for both distances but the design is very different.Monovision means one eye is corrected mainly for distance vision only and the other is corrected mainly for near vision only.ultifocal Contact Lenses Multifocal contact lenses come in many different brands and each is designed a little differently. Soft lenses continuously move and rotate on the eye and when the eye moves so does the lens so the design is not like a traditional bifocal with distance on top and near at the bottom.
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Zoom lens A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed focal length (FFL) lens (see prime lens).A true zoom lens, also called a parfocal lens, is one that maintains focus when its focal length changes.A lens that loses focus during zooming is more properly called a varifocal lens.enses in the latter group of zoom lenses, sometimes referred to as normal zooms, have displaced the fixed focal length lens as the popular one-lens selection on many contemporary cameras. The markings on these lenses usually say W and T for Wide and Telephoto.
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- Define lexical meaning: the meaning of the base (such as the word play) in a paradigm (such as plays, played, playing) the meaning of the base (such as the word play) in a paradigm (such as plays, played, playing)…
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- Definition-Parietal Lobe. Parietal Lobe-located behind the frontal cortex (and central sulcus); involved in perception of stimuli related to touch, pressure, temperature, and pain.Your name: *.ome › Definition-Parietal Lobe ›. Parietal Lobe-located behind the frontal cortex (and central sulcus); involved in perception of stimuli related to touch, pressure, temperature, and pain.
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- A progressive lens is a corrective lens used in eyeglasses to correct presbyopia. A progressive addition lens gradually and seamlessly changes in power to provide clear distance, as well as intermediate and near vision with no visible segments or demarcation lines. Progressive lenses are often referred to as invisible, no-line bifocals. Many people prefer the look of progressive lenses over bifocals, as they appear to be single vision lenses. In other words, nobody will realize that you are wearing bifocals. Also Known As: No-line bifocal, PAL (progressive addition lens ), varifocal lens.
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Intrathecal is an adjective that refers to something introduced into or occurring in the space under the arachnoid membrane of the brain or spinal cord. For example, intrathecal immunoglobulin production means production of this substance in the spinal cord.
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Documents & Installation Guides PAR is an acronym for parabolic aluminized reflector. A PAR lamp, which may utilize either an incandescent filament, a halogen filament tube or a HID arc tube, is a precision pressed-glass reflector lamp. PAR lamps rely on both the internal reflector and prisms in the lens for control of the light beam.
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- Definition: A term in linguistics for the vocabulary of a language. Adjective: lexical. See also: 1  Conceptual Meaning. 2  Correspondence Rule. 3  Language Change. 4  Lexeme. 5  Lexical Approach. 6  Lexical Modality.
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- A parfocal lens is a lens that stays in focus when magnification/focal length is changed. There is inevitably some amount of focus error, but small ... English dictionary cookies are used to personalize ads and get web traffic statistics.